Driving mechanism for jacquard-machines.



No. 69I,362. Patented Ian. 2|, I902.

. J. DEAN.

DRIVING MECHANISM FOR JACHUARD MACHINES.

(Application filed. July 3, 1899.]

(No Model.)

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' WITNESSES A TTORNE 1 THE NORRIS PETERS e07 nora'umo wAsmuaYcN, 0. c4

UNITED STATES PATENT OFFICE.

JOHN DEAN, OF PATERSON, NEW JERSEY, ASSIGNOR OF ONE-HALF TO JOHN F. KERR, OF PATERSON, NEW JERSEY.

DRIVING MECHANISM FOR JACQUARD-MACHINES.

SPECIFICATION forming part of Letters Patent No. 691,362, dated January 21, 1902.

Application filed July 3 1 89 9.

To all whom it may concern.-

Be it known that I, JOHN DEAN, a citizen of the United States, residing at the city of Paterson, in the county of Passaic and State of New Jersey, have invented certain new and useful Improvements in Driving Mechanism for J acquard-Machines for Looms, of

- which the following is a specification, reference being had therein to the accompanying drawings.

The object of my invention is to provide a driving mechanism for jacquard -machines for looms which will be simple in construction, durable and cheap, and will facilitate the weaving of silk goods.

The invention relates to that particular style of jacquard-machines known as a riseand-fall machine.

Various constructions of a driving mechanism have been employed to operate the upper and lower hook-plates of a rise-and-fall j acquard-inachine, either to move them simultaneously toward and away from each other or alternately, or to move them one at a time, permitting the other to remain stationary. One of the objections to most of the mechanisms known, and which my invention is meant to obviate, is the dwelling or resting for a long interval of the hook-plates previous to each upward-and-downward movement. My invention reduces it to the minimum. In my invention the plates are operated so as to give the shuttle a fair opportunity to pass completely through the shed, while the opposite planes thereof separate to give it unobstructed passage.

In operation my improved driving mechanism does not cause that jerky and shaky motion which causes a considerable strain on the various parts of the loom. To do away with this strain as far as possible and to apply a smooth rotary motion to the driving mechanism of jacquard-machines is one of the main objects of my invention. Another object accomplished by my invention is a I simple and convenient means of adjustment for regulating the action or the rising and falling of the hook-plates.

My invention consists in certain parts and combinations thereof, all as hereinafter is made clearly to appear, and it first will be Serial No. 722,690. (No model.)

fully described with reference to the accompanying drawings and then will be particularly pointed out and precisely defined in the claims appended to this specification and forming part thereof.

In the accompanying drawings similar letters and figures of reference indicate like parts in. both figures.

In the drawings, Figure. 1 is a side elevationshowing my invention and illustrating the method of its operation in driving a jacquard-machine. Fig. 2 is an end view thereof.

By reference to Fig. 1 it will be seen that lever-arms C and D are mounted on bearings D and D on the frame A and that the inner ends of the arms 0 and D are pivotally secured to the connecting-rods O and C respectively, of the upper hook-plate F and the lower F The hook-plate F is secured to the carriage E, and the hook-plates are guided by the guide-bars F. The guide-bars F are secured to the upper hook-plate F and they fall with the upper hook-plate and slide vertically through. the arms of the carriage E. The connecting-rods C, which are connected with the inner ends of the lever O, are also pivotally connected with the upper hookplate F, and the connecting-rods (J are pivotally connected with the arms of the carriage E, through which the rods F are adapted to slide vertically in an opening provided.

therein for that purpose. The outer ends of the lever-arms C and D are connected with eccentrics 1 1 by the connecting-links 3 3, which are in turn connected with the eccentric-straps l 4 of the eccentrics 1 1.

The main driving-shaft 16 is driven from the main shaft of the loom, a sprocket-chain 18 connecting a sprocket-wheel15 on shaft 16 with sprocket-wheel on main shaft of the loom.

The eccentrics 1 1 and the eccentric-plates 20 and adj listing-plates 21 are bolted to the eccentric-straps 4. The adj usting-plates 21 and the eccentric-plate 20 are provided with slots 22 to admit the adj usting-bolts 23, and the plates of the eccentrics also are provided with a slot 28 to allow for the shaft 16. The shaft 16 is mounted in bearings 2 2. The eccentrics are located directly on the shaft 16 and revolve independently upon the same. A miter gear-wheel 5, secured to the end of the shaft 16, meshes with and turns a miter gear-wheel 6 and turns the sprocket-wheel 7, from which chain 10 passes to the sprocketwheel 9 on the eccentric-shaf t 8. Thesprocket- Wheel 7 and miter-gear 6 are both mounted on the shaft 17. The shaft 8 works the cocen trics 12,which operate the arms B,in which is mounted the cylinder G. The eccentricrod 13 being connected with the cylinder-arm B by means of rod 14, power is thus conveyed from the main driving-shaft of the loom to the main driving-shaft of the jacquard driving mechanism. The shaft 16 and eccentrics 1 1 operate the lever-arms O and D, thus causing the hook-plates F and F to rise and fall and causing the eccentrics 12 to operate the cylinder-arms and batten B.

As is obvious, the adjustment of this mechanism to regulate the rise and fall of either or both of the hook-plates is very simple and easily accomplished.

With this description of my invention, what I claim is 1. In a jacquard-machine, the combination with themain frame of the machine of the driving-shaft 16 mounted in bearings at right angles with the front of the jacquard-machine,

the shaft 8, the shaft 17, both of said shafts running parallel with the front of the machine, the batten B, cylinder G, the eccentrics l2, driven by the shaft 8, the rod 14 connecting the batten B with the eccentric-strap 13, the intermeshing miter gear-wheels 5 and 6 secured to an end of shafts 16 and 17 respectively, the sprocket-wheels 7 and 9 and sprocket-chain 10 connecting the same, constructed substantially as set forth.

2. In ajacquard-machine, the upper hookplate, the lower hook-plate, and two bifurcated levers, the arms of which are pivotally secured to the frame of the machine, in combination with a driving-shaft, located at right angles to the front of the machine, eccentrics and eccentric-plates located directly on said shaft and revolving independently on the same, said eccentric-plates being provided with a slot for adjusting the same, eccentricstraps provided with adj Listing-slots, links pivotally secured to the outer ends of said lever-arms, adjusting-plates connecting said links and said eccentric-straps, rods connecting pivotally the upper hook-plate and the arms of the upper bifurcated lever, rods pivotally connecting the lower hook-plate and the arms of the lower bifurcated lever, the carriage E secured to the lower hook-plate and guide-rods secured to the upper h0ok-.

plate, and adapted to rise and fall therewith, and to slide vertically through the arms of the carriage E, in openings provided therein, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN DEAN.

Witnesses:

J. F. BoIoE, WALTER FREESTONE. 

